8 oz. Hershey's milk chocolate bar, broken in pieces
1/4 c. butter
1 2/3 c. boiling water
2 1/2 c. unsifted all purpose flour
2 c. packed, light brown sugar
2 tsp. salt
2 eggs
1/2 c. sour cream
1 tsp. vanilla

Combine chocolate bar, butter and boiling water in medium mixing bowl. Stir in chocolate bar until it is melted. Combine flour, brown sugar, baking soda and salt in a large mixing bowl. Gradually add chocolate mixture, beating until thoroughly blended. Blend in eggs, sour cream and vanilla. Beat 1 minute on medium speed. Pour into greased and floured 13 x 9 pan. Bake at 350 degrees for 40 minutes or until toothpick comes out clean. Cool completely. Frost with chocolate frosting.

CHOCOLATE FROSTING:

1 c. sugar
5 tbsp. butter
1/3 c. milk
6 oz. pkg. semisweet chocolate chips

Combine sugar, butter and milk and cook over medium heat, stirring constantly until mixture comes to a boil. Boil 1 minutes. Stir in chocolate chips. Stir until smooth. Cool completely. Spread on cake.